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Date:	Sun, 06 Jul 2014 13:04:38 +0200
From:	Lakhsa <lakhsa AT posteo DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Re: cygwin64 problems after update: gcc 4.8.3-2, cygcheck -p
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After some extended research and trials with a fresh OpenSSL master
clone openssl32_trial this seems to be a problem of the cygwin ports of GCC.
I've added some information about this - maybe one of the developers
listening in on the OpenSSL project could have a closer look.

Wrt OpenSSL development this is not a serious problem, merely annoying
as this requires separate 32-bit and 64-bit cygwin installations to
maintain.
The 'cygcheck -p' seg fault is also not serious, merely similarly
annoying as the 32-bit installation is required to find out which
package contains a specific binary.

Any useful advice will be greatly appreciated to get away from having to
maintain two separate development environments again.

Cheers Lakhsa

P.S.: Trial for the interested: OpenSSL build configs 'Cygwin' and
'debug-Cygwin' with gcc options '-m32 -march=i686' to build 32-bit code.

Problem is present in the cygwin64 packages for gcc-core 4.8.3-2 as well
as gcc-core 4.8.2-3. Error occurs very early in the build process when
building crypto/objects:

make[2]: Entering directory
'/cygdrive/d/dev/openssl/openssl32_trial/crypto/objects'
gcc [...] -c -o obj_dat.o obj_dat.c
obj_dat.c: In function ‘OBJ_create_objects’:
obj_dat.c:781:2: error: unrecognizable insn:
}
^
(insn 30 29 31 6 (set (reg/f:SI 122)
(symbol_ref:SI ("__ctype_ptr__") [flags 0x440] <var_decl 0x6ffffd28630
__ctype_ptr__>)) obj_dat.c:747 -1
(nil))
obj_dat.c:781:2: internal compiler error: in extract_insn, at recog.c:2154

This problem crops up on a regular basis in the gcc.gnu.org bug tracker,
e.g. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57099. It is not
present in cygwin64 package gcc-core-4.9.0-1, but that version results
in a linker error very late in the build process when compiling/linking
apps code. That's may be due to inconsistent/incomplete installation, so
another problem.

/usr/bin/ld: cannot find -lgcc_s
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-pc-cygwin/4.9.0//libgcc.a when searching for -lgcc
/usr/bin/ld: cannot find -lgcc
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-pc-cygwin/4.9.0/../../../libcygwin.a when searching
for -lcygwin
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-pc-cygwin/4.9.0/../../../libcygwin.a when searching
for -lcygwin
/usr/bin/ld: cannot find -lcygwin
/usr/bin/ld: cannot find -ladvapi32
/usr/bin/ld: cannot find -lshell32
/usr/bin/ld: cannot find -luser32
/usr/bin/ld: cannot find -lkernel32
/usr/bin/ld: skipping incompatible
/usr/lib/gcc/x86_64-pc-cygwin/4.9.0//libgcc_s.dll.a when searching for
-lgcc_s
/usr/bin/ld: cannot find -lgcc_s
/usr/bin/ld: cannot find -lgcc
collect2: error: ld returned 1 exit status

On 05/07/2014 22:15, Lakhsa wrote:
> G'Day,
>
> after having updated my cygwin64 installation (Win7-64) for OpenSSL
> development I have encountered 2 problems:
>
>   * compiling for 32-bit with '-m32 -i686' now fails with internal
>     compiler error: in extract_insn, at recog.c:2154
>   * cygcheck -p [any_binary] produces a seg fault
>
> Both used to work until last update of the cygwin64-only setup end of
> June 2014 from FTP server at Uni Erlangen.Both problems seem to have
> occurred in the past and seem to have been fixed in due course, so I
> wonder how they could crop up again.
>
> I've installed a completely fresh copy of cygwin64 (using
> cygwin_setup-x86_64_2.850.exe) and also a new copy of cygwin32 (using
> setup-x86_2.850.exe) via FTP. The cygwin64 gcc is 4.8.3-2 whereas the
> cygwin32 version is 4.3.8-1, but the 32-bit problem for the cygwin64 gcc
> version persists.
>
> Any idea what could be the cause of this and how to track it down viz.
> correct it would be enormously appreciated.
>
> Thanx for your attention,
>
> --
> Lakhsa
>
>
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